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The ICO has been starting to issue fines over the last few months to those that have allowed user data to end up in the open, which helps resellers of both security and storage products with their sales pitches.
The latest cases have involved Ealing Council and Hounslow Council, both of which lost unencrypted laptops containing personal information.
Ealing was hit with a fine of £80,000 and Hounslow had to swallow a penalty of £70,000 for allowing their own security policies to be broken.
Deputy Commissioner David Smith said that of the four fines it had handed out so far three were for the loss of unencrypted laptops.
"Both councils have paid the price for lax data protection practices. I hope all organisations that handle personal information will make sure their houses are in order - otherwise they too may have to learn the hard way," he said.
The response from the channel has been to seize on the latest fines as proof that there is still plenty to be done by customers to protect their data.
"It's good to see the ICO stick to its word and continue to fine those in serious breach of the Data Protection Act," said Mark Fulbrook, director UK and Ireland at Cyber-Ark.